Pioneer dv 646 a service manual

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2 DV-646A 1. SAFETY INFORMATION (Printed on the Rear Panel) LABEL CHECK WARNING ! THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS. LASER DIODE CHARACTERISTICS FOR DVD : MAXIMUM OUTPUT POWER : 5 mW WAVELENGTH : 655 nm FOR CD : MAXIMUM OUTPUT POWER : 5 mW WAVELENGTH : 785 nm This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. Additional Laser Caution 1. Loading-status detection switch (S101 on the LOAB assy) are detected by the microprocessor (IC601 in the DVDM assy). - To permit the laser diode to oscillate, it is required to set the loading- status detection switch for the clamp position (the center terminal of S101 is shor ted to +3V). When the voltage of IC101-pin 20 is +3V and IC601 (microprocessor) - pin 83 is +3V, 650nm laser diode for DVD oscillates in the DVDM Assy. When the voltage of IC101-pin 20 is +3V and IC601 (microprocessor) - pin 83 is 0V (GND), 780nm laser diode for CD oscillates in the DVDM Assy. In the test mode -ˆ— , the laser diode oscillates when microprocessor detects a PLAY signal, or when the PLAY key is pressed (S252 ON in the KEYB assy), with the above requirements satisfied. 2. When the cover is open, close viewing through the objective lens with the naked eye will cause exposure to the laser beam. -ˆ— : See page 57.

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DV-646A 3 PACKING PARTS LIST Mark No. Description Part No. FRONT 13, 14 "Operating Instructions" 5 4 12 6 20 10 2 3 1 8 9 7 11 1 Power Cable ADG1154 2 Audio Cable (L = 1.5m) VDE1052 3 Video Cable (L = 1.5m) VDE1053 4 Remote Control Unit VXX2627 5 Battery Cover VNK4423 NSP 6 Dry Cell Battery (R6P, AA) VEM-013 7 Pad F VHA1269 8 Pad R VHA1270 9 Packing Case VHG2062 10 Mirror Mat Sheet Z23-007 2.1 PACKING 2. EXPLODED VIEWS AND PARTS LIST NOTES: - Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. - The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. - Screws adjacent to mark on the product are used for disassembly. NSP 11 Warranty Card ARY7022 12 Polyethylene Bag VHL1051 13 Operating Instructions VRE1088 (English/French/German/Italian) 14 Operating Instructions VRF1057 (Spanish/Portuguese/Dutch/Swedish) 15- - - - - 16- - - - - 17- - - - - 18- - - - - 19- - - - - NSP 20 Polyethylene Bag AHG7032 Mark No. Description Part No.